近交对中间球海胆受精率、孵化率和幼体发育的影响  

Effect of inbreeding on fertility rate,hatchability and larva development of sea urchin Strongylocentrotus intermedius

作　　者：周海森[1] 罗世滨[1] 张伟杰[1] 高琳琳[1] 赵冲[1] 常亚青[1] 

机构地区：[1]大连海洋大学农业部北方海水增养殖学重点实验室,辽宁大连116023

出　　处：《大连海洋大学学报》2013年第5期445-449,共5页Journal of Dalian Ocean University

基　　金：国家"863"计划项目(2012AA10A412)

摘　　要：通过构建不同近交水平的海胆群组,即半同胞近交组(H组,F=0.125)、全同胞近交组(F组,F=0.25)和对照组(C组,F=0),研究了近交对中间球海胆Strongylocentrotus intermedius受精、孵化和幼体发育阶段的影响。结果表明:近交对海胆的受精率、孵化率和四腕幼体的畸形率均无显著影响(P>0.05);不同近交水平的四腕、六腕和八腕幼体体长均表现为H组>C组>F组,体宽表现为无规律性;六腕幼体的胃长和胃宽均为F组>C组>H组,八腕幼体的胃长和胃宽均为C组>H组>F组。研究表明,一定近交水平(F=0.25)的中间球海胆的受精、孵化,以及变态前幼体的体长、体宽均没有出现明显的近交衰退,但幼体胃长和胃宽的近交衰退现象比较明显。In the present study, we investigated the effects of inbreeding on fertility rate, hatchability and larva de- velopment of sea urchin Strongylocentrotus intermedius by establishing three inbreeding level （F= 0, 0. 125, 0.25 ） groups （ C, H and F）. The results showed that the influence of inbreeding on fertility rate, hatchability and aberra- tion rate of four arms larva were not significant （ P〉0.05 ）. arms and eight-arms at the different inbreeding levels was The order of body length of larvae with four-arms, six- ranged body width has no remarkable regularity. The order of length as H group〉C group〉F group. The change in and width of stomach in six arms larvae was ranged as F group〉C group〉H group. The length and width of stomach in eight arms larvae was expressed as C group〉H group〉F group. The results showed that the inbreeding level of F=0.25 was not harmful to the fertility rate, hatch- ability and larva development of the sea urchin Strongylocentrotus intermedius except the development of stomach.

关 键 词：中间球海胆 近交 幼体发育 

分 类 号：S968.22[农业科学—水产养殖]